/Engine/Source/Developer/ScreenShotComparisonTools/Public/ImageComparer.h
FImageTolerance ( uint8 R, uint8 G, uint8 B, uint8 A, uint8 InMinBrightness, uint8 InMaxBrightness, bool InIgnoreAntiAliasing, bool InIgnoreColors, float InMaximumLocalError, float InMaximumGlobalError )